如何在sqlalchemy表达式语言中使用jsonb与select表达式中的integer进行比较？

from sqlalchemy import create_engine, Column, Integer, String, select
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.ext.declarative import declarative_base

Base = declarative_base()

class MyTable(Base):
    __tablename__ = 'my_table'
    id = Column(Integer, primary_key=True)
    data = Column(JSONB)

# 创建数据库连接
engine = create_engine('postgresql://username:password@host:port/database')

# 创建会话
session = Session(engine)

# 使用jsonb与select表达式中的integer进行比较
query = select(MyTable).where(MyTable.data['key'].astext.cast(Integer) == 123)

# 执行查询
result = session.execute(query)

# 处理查询结果
for row in result:
    print(row)

# 关闭会话
session.close()